1. The cost in dollars of an "n" mile trip with the Supreme Taxi Service is given by 1.5 + 1.75n. The cost of an "n" mile trip using Town Taxi Service is given by 1.9 + 1.6n. For rides between 1 and 10 miles, which service would you choose? Explain.

3. A hot air balloon is at a height of 2,250 feet. It descends 150 feet each minute. Find it's height after six, eight, and ten minutes. Make a table to show the pattern of heights. Write an expression for the balloon's height at "m" minutes.

1. So I assume it's adding 1.5 + 1.75 • n, right? For the first taxi can service? Then, the NEXT one charges 1.9 + 1.6 • n, correct? So far, all I have is that. I don't know what to multiply it by, because it says "between 1 and 10 miles." Would it be n = 5?

2. I think these are the answers, but I'm not sure, so I need some help:

a) p • n (or 35 • 105)
b) 65 • 2 + b + 75

Am I supposed to put the answer, too? It says "expression" so....

3. This one just has me completely lost. Do I divide or subtract or...? I have not the slightest idea what the answers are, how to set up the expression, how to make the table, etc. This is why I need help urgently, PLEASE. I'll try, though...